How Long Can the Micro SD Card in Reolink Cameras Record

This article will show you how to calculate the SD card capacity so that you can choose a proper SD card for your camera.

Applies to: Which Cameras Support Micro SD Card

Notes:

1. Below are two tables: one for continuous 7*24h recording, and one for alarm recording (using 900s per day as examples). Calculating storage time, we need to consider both the bitrate of the main stream and the sub-stream. Main stream and sub stream can be combined freely, so the tables presented below show only the duration of recording for the main stream. To calculate the main stream + sub stream, simply add their bitrates in the formula.

2. Bitrate affects video quality and the size of recording files. In general, the higher the bitrate is, the better the image and audio quality will be, and the bigger the file size will be, and vice versa.

3. If it is a camera with dual lenses, the wide-angle lens and the tracking lens, along with their respective main and sub-streams, need to be included in the calculation.

4. Battery-powered cameras do not support continuous recording, so please refer to the motion video recording duration table below.

Continuous recording 7*24

Here is the formula that demonstrates the relationship between the SD Card Capacity, the Bitrate (bitrate of clear stream+bitrate of fluent stream), and the Recording Time.

Here are some references for the Recording Time under different Bitrate and SD Card Capacities.